Young rolled out on a fourth-down play and was about to run for the first down when his right leg stuck in the turf. He wound up throwing an incomplete pass as he went down, then immediately limped to the sideline. Eagles trainers looked at the back of Young's right knee, and he gimped along the sideline before heading to the locker room with 18 seconds remaining in the half.

Young might be limited when practice picks up Monday. That said, no one seems all that concerned.

Should that not be the case, Reid would turn to Mike Kafka to be the Eagles' No. 2 quarterback. Kafka, a second-year pro, was 34 of 49 passing in four preseason games, totaling 369 yards with two touchdowns and two interceptions.

"I'm just very comfortable with him," Reid said. "He's had a good preseason, and so I have enough trust there."

Young was 14 of 19 passing for 189 yards and one touchdown against New York's backups. Kafka, who played the entire second half against the Jets, went 7 of 11 for 76 yards and an interception.